情态动词、be动词、助动词
情态动词：can may will must should could might would
be 动词：am is are was were
助动词：do does did 现在完成时中的have/has,过去完成时中的had一般疑问句的构成（简单理解）
【定义一】将陈述句中的【情/be/助】提前至句首，就能得到相应的一般疑问句
I should tell him the truth.
Should i tell him the truth?
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She is a nurse.
Is she a nurse?
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Tom has been there many times.
Has Tom been there many times?
【定义二】陈述句中不含【情/be/助】通过在句首添加助动词do、does或did得到一般疑问句，陈述句的时态为一般现在时，主语是单数第三人称，句首添加助动词Does得到一般疑问句。
she likes English.
Does she like English?
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They like English.
Do they like English?
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She broke the window.
Did she break the window?
添加助动词do/does/did后，后方的动词必须还原为原型。例句练习
He can swim.
can he swim?
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She will come back in a year.
Will she come back in a year?
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She is hanging out with Tom.
Is she hanging out with Tom?
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She is mad at me.
Is she had at me?
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We have watched this movie.
Have we watched this movie?
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They have been together for a year.
Have they been together for a year?
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She wants to get the job.
Does she want to get the job?
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They work here.
Do they work here?
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She had a crush on me when we were kids.
Did she have a crush on me when we were kids?
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She had cleaned the room by 9 o'clock last night.
Had she cleaned the room by 9 o'clock last night?一般疑问句的构成（深入理解）
一般疑问句=情/be/助 + 陈述句
有情态动词 用情态动词
进行时态 用be动词
将来时态 用will或者be...going to
完成时 Have,Has或者Had
一般现在时和一般过去时
（含有动词） 用Do,Does或Did
（不含有动词） 用be动词例句练习
Must we clean this room?
Can/May i borrow your pencil?
Is he humorous?
Was he a teacher?
Did you receive my message yesterday?
Are they watching TV?
Does she know me?
Will you go to Beijing next week?
Does your wife do housework?
Have you lived here for ten years?
Have you seen Tony?特殊疑问句
特殊疑问词
【名词】what whatever who whoever which
【副词】how where when why
【形容词】which whose
以下情况看作一个特殊疑问词
【what+n】What color do you like?
【how+n】How many times have you been there?
【how+adj】How old are you?
【how+adv】How fast can this car run?特殊疑问句的构成
特殊疑问句=特殊疑问词+情/be/助+陈述句
What do you want?
What gift did you get her?
Why did you lie to me?
What zodiac sign are you?
How many years have you lived here?
How many years did you live in Shanghai?
When will he come back?
How tall can this tree grow?
How fast can this car run?否定句
【否定句构成方法】
在【情/be/助】后方添加not得到相应的否定句
如果肯定句中没有【情/be/助】就在动词前方+don't,doesn't,didn't.例句练习
They will find us.
They will not find us. They won't find us.
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He was sleeping on the couch when his father arrived home.
He wasn't sleeping on the couch when his father arrived home.
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We have met before.
We haven't met before.
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She likes me.
She doesn't like me.